李文军 　陈山林　 田光磊　 田文　 王树锋 　张友乐

Objective  To report uncommon and non-sports type V avulsion injury of the insertion of the flexor digitorum profundus tendon and to investigate the treatment methods.

Methods The clinical results of 2 patients who were both treated in our department on October 29, 2012 were retrospectively analyzed.

Results  A male patient was 38 years old, whose left ring finger injuries were caused by heavy things. A female patient was 31 years old, whose left little finger injures were caused by collision. They were both treated with Kirschner wire fixation combined with snap pullout of the absorbable polydioxanone suture ( PDS ) II. The 2 patients were followed up for 14 months. The active range of motion of the distal interphalangeal ( DIP ) joint recovered to 90% of that of the normal side.

Conclusions  Type V avulsion injury of the insertion of the flexor digitorum profundus tendon is uncommon, and the early diagnosis and surgical treatment is a good choice, with good clinical results.